Abbas' Fatah movement chose to celebrate 51 years of violence and killing to mark the 51st anniversary of its founding. It posted the above image on its Lebanese website, where the number 51 is made up of a knife, a bullet and a rifle. The text says "Revolution until victory."

On Facebook, Fatah's official page cheered the results of its terror attacks - what it calls "sowing terror" among Israelis - and posted a picture of a masked Fatah fighter with the words:

"Half a century of sowing terror in the eyes of the sons of Zion"

‎[Official Facebook page of the Fatah ‎Movement, Dec. 29, 2015] ‎

Another post, this time with a masked Fatah fighter with a rifle, vowed to "redeem the homeland with blood":

"We march, we are not afraid of the fire and we do not fear death. With blood we will redeem the homeland and saturate its ground. The anniversary is approaching."

[Official Facebook page of the Fatah Movement, Dec. 26, 2015]

The knife in the logo above is particularly relevant at the current time amid the surge of Palestinian terror attacks, many of which have been stabbings. Since October, 10 Israelis have been killed and 72 wounded in stabbing attacks. In total, 25 Israelis have been murdered and 259 have been injured during the current terror wave.